[Hammarlund] tubes for SP-600

[Bob Camp]

Hi

If you are running in a high vibration environment then the JAN parts 
probably are worth using. In some cases when you look at a JAN part it 
will have more support for the internals than a "normal" tube. Of 
course in a lot of cases the JAN and normal parts look identical.

The JAN parts sometimes had higher minimum Gm specifications than the 
standard parts or longer filament life ratings. I have never seen any 
real difference either way.

After a while I suspect that the tube factory was cheaper to run if 
everything was built as JAN and then labeled as  what ever was needed. 
An awful lot of tubes in my parts bin are marked with both part numbers 
on them.

	Take Care!

		Bob Camp
		KB8TQ



On Sep 11, 2004, at 1:36 PM, Jakub Jakubowicz wrote:

>
> Hello,
>
> is there any difference in quality, long life or any
> other between JAN tubes like 5749, 5750
> and standard type 6ba6, 6be6?
>
> Oskar
>
>
>
> 		
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